All combination charachters

allcombchar.py

a = [ 'a','b','c','d']
b = []
length = len(a)
print(a)
print(length)
temp = 1
for k in range(1,length):
    valk = k
    for i in range(length):
        for j in range(i+1,length):
            temp = ""
            k = 1
            while(k != valk and k+j <= length):
                #print("i%d j%d k%d" %(i, j, k))
                temp = temp + a[j+k-1]
                k += 1
            if(k+j <= length):
               #print("i%d j%d k%d" %(i, j, k))
               b.append(a[i]+temp)
               print(b)